Trimming-machine



(No Model.)

H. IHBILLMEYERQ I TRIMMING MAGHINB.

Patented Nov. 29, 1887;.

w 5 n L M m ar N W a a w v UNITED STATES PATENT OFFICE.

HAMLIN F. BILLMEYER, OF MILTON, PENNSYLVANIA.-

TRlNlMlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 373,960, dated November29, 18237.

To 00% whom/it may concern:

Be it known that I, HAMLIN F. BILLMEYER, a citizen of the United States,residing at Milton, in the county of Northumberland and State ofPennsylvania,have invented anew and useful Improvement inTrimming-lVIachines,0f which the following is a specification.

My invention relates to an improvement in machines for trimmingthetenons of door,shutter, and blind rails; and it consists in thepeculiar construction and combination of devices, that will be morefullyset forth hereinafter,and particularly pointed out in the claims.

In the drawings, Figure 1 is a front elevation of a machine embodying myimprovements. Fig. 2 is a rear elevation of the same. Fig. 3 is an endelevation. Fig. dis a vertical sectional view taken on the line 00 a: ofFig. 1. Fig. 5 is a detail perspective view of one of the cutting-bits;

A represents a vertical frame of suitable height. This frame is providedin its sides with vertical grooves B.

0 represents a sliding frame comprising a pair of brackets, D, having,vertical tongues on their inner sides to enter the grooves B,a frontbar, E, connecting the front upper sides of the brackets, and across-board, F, connecting the rear sides of the brackets and extendingacross the rear side of the. vertical frame. On the vertically-movableframe 0 is secured a bedplate, G, which is arranged horizontally'andprojects beyond one side of the main frame and has on its rear side avertical flange, H. 011

the rear side of the cross-board F is a projecting block, I. Krepresents a similar block, which is secured on the rear side of theframe A,near the upper end thereof. A vertical elevating'screw shaft, L,is swiveled in the upper block,K,and extends down through a threadedopening in the block I. By turning this screwshaft it will be understoodthat the bed on the front side of the main frame may be raised orlowered.

M represents a crank-handle having a socket adapted to fit the upper endof the screw-shaft.

N represents a horizontal gage, which is secured on the front side ofthe frame A. The ends of the said gage project beyond the sides of themain frame. 011 one end of the said gage is secured a slidingsleeve orstop, 0, and

the said sleeve or stop is provided with a set- Anplication filed June24, 1887. Serial No. 242,407. (No model.)

any desired longitudinal adjustment.

It represents a right-angled bracket-plate, the lower side of whichbears against the upper side of the gage N, and'the upper sidesof thesaid bracket-plate is provided with a vertical slot, through whichextends a set-screw, S, that enters a threaded opening in the front sideof the frame A and clamps the bracketplate to the latter.

T represents a horizontal cutting-bit, which projects from the frontside of the frame A and rests upon the upper side of the gage N.

U represents a vertically-movable head, which is secured in a verticalslot, V, made in the upper portion of the frame A, and the said head isadapted to travel in the said slot. A coiled spring, W, is concealed ina vertical opening made in the frame A and comment eating with the lowerend of the slot V, This coiled spring bears against the under side ofthe head U, and the function thereof is to normally raise the said head.To one side of the latter, and projecting from the front side of theframe A and at right angles thereto, is a cutting-bit, X, which isadapted to move vertically with the head U.

Y represents a treadle, which is fulcrumed to the floor at a slightdistance to one side of the frame A. The said treadle is connected tothe head U by a rod, Z, and thereby the head may be caused to descend byplacing one foot on the treadle.

The operation of my invention is as follows: The rail to be trimmed isfed from the tenoning-machine-(not shown) onto the bed G, which haspreviously been elevated to the required height, so as to bring theupper edge of the rail flush with the upper side of the gage N. The railis moved longitudinally on the bed G, and the upper edge of its tenoncomes in contact with the horizontal bit T and is shaved and trimmed bythe latter. The sleeve or N, according to the depth of the tenon, andwhen the end of the tenon reaches the said stop or sleeve the motion ofthe rail is arrested, and the operator then causes the head U todescend, and thereby the vertical bit X makes a cut at the shoulder ofthe tenon and severs the shaving therefrom, thus completing stop 0 isadjusted longitudinally on the gage screw, P, adapted to bear againstthe gage and thereby secure the sleeve or stop thereto at.

the operation of trimming that side of the tenon.

Having thus described my invention, I claim 1. The combination, in amachine for trimming tenons, of the bed-plate G, the horizontal bit T,the gage N, the stop 0, adjustable longitudinally on the said gagetoward and from the bit T, and the vertically-movable head U, carryingthe vertical bit X, all combined and arranged to operate substantiallyas described.

2. In a machine for trimming tenons, the combination of the verticalframe A, the vertically-adj ustable bed projecting from one side of theframe, the gage N, arranged parallel with the bed and above the same,the horizontal cutting-bit T, projecting from the front side of theframe and resting on the edge of the gage, the longitudinally-adjustable stop 0 on the gage, and the vertically-movable head U, havingthe vertical bit X, substantially as described.

33. The combination of the vertical frame A, the vertically-ad j ustablebed secured to the said frame, the elevating-screw to raise and lowerthe bed, the gage N, arranged horizontally on the frame A, thehorizontal bit T, projecting from the frontside of the frame and restingon the gage, the sleeve or stop 0 0n the gage and adj ustablelongitudinally on the gage, the vertically-movable head U, having thevertical bit X, the spring to normally raise the said head, and thetreadle connected to the head to lower the same, for the purpose setforth, substantially as described.

4. In a machine for trimming tenons, the combination of the frame havingthe horizontal stationary bit T and the vertically-movable head havingthe vertical cutting-bit X, sub-' stantially as described.

5. In a machine for trimming tenons, the combination of the frame havingthe horizontal stationary shaving-bit T, the verticallymovable headhaving the vertical cutting-bit X, the lever to depress the head,and thespring to raise the same, substantially as described.

6. In a machine for trimming tenons, the combination of the frame havingthe stationary horizontal shaving-bit T, the horizontal gage N, bearingunder the said bit, said gage being stationary, the vertically-movablehead W above the bit T and having the vertical cutting-bit X, and thebed G, vertically adjustable with relation to the bit, substantially asdescribed.

7. In a machine for trimming tenons, the combination of thevertically-movable head carrying the vertical cutting-bit X and thehorizontalstationary shaving-bit'lat the lower limit of the path ofthehead, substantially as described.

In testimony that I claim the forcgoingas my own I have hereto affixedmy signature in presence of two witnesses.

HAMLIN F. BILLMEYER.

\Vitnesses: I

J 0s. ANGSTADT, FRANK R. WILsoN.

